./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:59:32,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:59:32,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:59:32,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:59:32,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:59:32,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:59:32,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:59:32,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:59:32,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:59:32,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:59:32,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:59:32,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:59:32,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:59:32,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:59:32,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:59:32,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:59:32,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:59:32,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:59:32,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:59:32,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:59:32,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:59:32,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:59:32,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:59:32,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:59:32,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:59:32,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:59:32,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:59:32,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:59:32,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:59:32,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:59:32,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:59:32,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:59:32,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:59:32,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:59:32,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:59:32,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:59:32,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:59:32,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:59:32,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:59:32,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:59:32,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:59:32,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 01:59:32,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:59:32,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:59:32,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:59:32,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:59:32,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:59:32,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:59:32,761 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:59:32,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:59:32,761 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:59:32,762 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:59:32,763 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:59:32,763 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:59:32,763 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:59:32,764 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:59:32,764 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:59:32,764 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:59:32,764 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:59:32,765 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:59:32,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:59:32,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:59:32,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:59:32,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:59:32,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:59:32,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:59:32,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:59:32,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:59:32,767 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:59:32,768 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:59:32,768 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:59:32,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:59:32,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 01:59:32,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:59:32,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:59:32,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:59:32,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:59:32,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:59:32,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:59:32,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:59:32,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:59:32,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:59:32,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:59:32,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:59:32,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-11-23 01:59:33,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:59:33,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:59:33,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:59:33,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:59:33,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:59:33,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-11-23 01:59:33,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/7ec3e2022/09337e0be21c489f9ea3940119c8224b/FLAG9e6410c2d [2021-11-23 01:59:33,762 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:59:33,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-11-23 01:59:33,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/7ec3e2022/09337e0be21c489f9ea3940119c8224b/FLAG9e6410c2d [2021-11-23 01:59:34,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/7ec3e2022/09337e0be21c489f9ea3940119c8224b [2021-11-23 01:59:34,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:59:34,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:59:34,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:59:34,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:59:34,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:59:34,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:34" (1/1) ... [2021-11-23 01:59:34,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4258b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:34, skipping insertion in model container [2021-11-23 01:59:34,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:34" (1/1) ... [2021-11-23 01:59:34,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:59:34,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:59:34,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:59:34,651 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 01:59:34,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b1f8bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:34, skipping insertion in model container [2021-11-23 01:59:34,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:59:34,653 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 01:59:34,656 INFO L158 Benchmark]: Toolchain (without parser) took 610.19ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 70.1MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:59:34,658 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory was 66.3MB in the beginning and 66.2MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:59:34,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 606.61ms. Allocated memory is still 96.5MB. Free memory was 60.7MB in the beginning and 70.1MB in the end (delta: -9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:59:34,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory was 66.3MB in the beginning and 66.2MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 606.61ms. Allocated memory is still 96.5MB. Free memory was 60.7MB in the beginning and 70.1MB in the end (delta: -9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:59:37,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:59:37,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:59:37,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:59:37,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:59:37,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:59:37,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:59:37,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:59:37,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:59:37,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:59:37,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:59:37,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:59:37,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:59:37,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:59:37,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:59:37,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:59:37,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:59:37,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:59:37,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:59:37,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:59:37,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:59:37,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:59:37,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:59:37,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:59:37,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:59:37,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:59:37,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:59:37,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:59:37,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:59:37,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:59:37,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:59:37,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:59:37,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:59:37,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:59:37,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:59:37,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:59:37,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:59:37,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:59:37,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:59:37,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:59:37,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:59:37,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 01:59:37,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:59:37,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:59:37,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:59:37,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:59:37,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:59:37,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:59:37,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:59:37,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:59:37,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:59:37,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:59:37,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:59:37,223 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:59:37,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:59:37,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:59:37,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:59:37,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:59:37,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:59:37,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:59:37,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:59:37,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:59:37,227 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:59:37,227 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:59:37,228 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:59:37,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:59:37,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 01:59:37,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 01:59:37,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 01:59:37,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:59:37,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:59:37,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:59:37,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:59:37,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:59:37,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:59:37,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:59:37,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:59:37,231 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 01:59:37,232 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 01:59:37,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:59:37,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:59:37,232 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2021-11-23 01:59:37,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:59:37,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:59:37,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:59:37,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:59:37,687 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:59:37,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-11-23 01:59:37,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/8dd9b447c/a1719847a6e84cddb344ae37da5edd94/FLAG911924ee5 [2021-11-23 01:59:38,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:59:38,459 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2021-11-23 01:59:38,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/8dd9b447c/a1719847a6e84cddb344ae37da5edd94/FLAG911924ee5 [2021-11-23 01:59:38,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/data/8dd9b447c/a1719847a6e84cddb344ae37da5edd94 [2021-11-23 01:59:38,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:59:38,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:59:38,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:59:38,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:59:38,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:59:38,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:38" (1/1) ... [2021-11-23 01:59:38,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1122a653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:38, skipping insertion in model container [2021-11-23 01:59:38,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:38" (1/1) ... [2021-11-23 01:59:38,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:59:38,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:59:39,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:59:39,277 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 01:59:39,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:59:39,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:59:39,382 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:59:39,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:59:39,495 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:59:39,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39 WrapperNode [2021-11-23 01:59:39,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:59:39,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:59:39,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:59:39,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:59:39,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,555 INFO L137 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 61 [2021-11-23 01:59:39,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:59:39,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:59:39,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:59:39,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:59:39,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:59:39,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:59:39,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:59:39,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:59:39,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (1/1) ... [2021-11-23 01:59:39,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:59:39,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:59:39,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:59:39,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:59:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 01:59:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 01:59:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:59:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:59:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:59:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:59:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:59:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:59:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:59:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:59:39,874 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:59:39,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:59:40,166 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:59:40,172 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:59:40,173 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:59:40,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:40 BoogieIcfgContainer [2021-11-23 01:59:40,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:59:40,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:59:40,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:59:40,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:59:40,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:38" (1/3) ... [2021-11-23 01:59:40,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bc79da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:40, skipping insertion in model container [2021-11-23 01:59:40,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:39" (2/3) ... [2021-11-23 01:59:40,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bc79da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:40, skipping insertion in model container [2021-11-23 01:59:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:40" (3/3) ... [2021-11-23 01:59:40,184 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2021-11-23 01:59:40,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:59:40,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-23 01:59:40,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:59:40,246 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:59:40,246 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-23 01:59:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:59:40,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:40,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:40,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:40,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2021-11-23 01:59:40,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:40,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3818025] [2021-11-23 01:59:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:40,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:40,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:40,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:40,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 01:59:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:59:40,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:40,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:40,613 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:40,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3818025] [2021-11-23 01:59:40,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3818025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:40,615 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:40,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 01:59:40,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13865631] [2021-11-23 01:59:40,618 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:40,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:59:40,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:40,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:59:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:40,665 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:40,787 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-11-23 01:59:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:59:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 01:59:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:40,802 INFO L225 Difference]: With dead ends: 80 [2021-11-23 01:59:40,802 INFO L226 Difference]: Without dead ends: 76 [2021-11-23 01:59:40,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:40,813 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:40,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 215 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-23 01:59:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2021-11-23 01:59:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-11-23 01:59:40,893 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2021-11-23 01:59:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:40,895 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-11-23 01:59:40,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-11-23 01:59:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:59:40,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:40,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:40,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:41,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:41,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2021-11-23 01:59:41,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:41,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206652763] [2021-11-23 01:59:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:41,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:41,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:41,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:41,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 01:59:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:41,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:59:41,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:41,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:41,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206652763] [2021-11-23 01:59:41,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206652763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:41,317 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:41,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 01:59:41,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513377006] [2021-11-23 01:59:41,317 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:41,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:59:41,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:59:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:41,320 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:41,365 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-11-23 01:59:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:59:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 01:59:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:41,368 INFO L225 Difference]: With dead ends: 44 [2021-11-23 01:59:41,368 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 01:59:41,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:41,370 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:41,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 119 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:59:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 01:59:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-23 01:59:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-11-23 01:59:41,390 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2021-11-23 01:59:41,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:41,390 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-11-23 01:59:41,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-11-23 01:59:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:59:41,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:41,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:41,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:41,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:41,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:41,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2021-11-23 01:59:41,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:41,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245422987] [2021-11-23 01:59:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:41,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:41,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:41,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:41,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 01:59:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:41,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 01:59:41,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:41,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:41,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:41,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245422987] [2021-11-23 01:59:41,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245422987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:41,895 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:41,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 01:59:41,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060336274] [2021-11-23 01:59:41,896 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:41,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:59:41,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:41,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:59:41,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:59:41,898 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:42,005 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-11-23 01:59:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:59:42,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-23 01:59:42,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:42,007 INFO L225 Difference]: With dead ends: 60 [2021-11-23 01:59:42,008 INFO L226 Difference]: Without dead ends: 60 [2021-11-23 01:59:42,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 01:59:42,009 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:42,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 63 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-23 01:59:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2021-11-23 01:59:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.5625) internal successors, (50), 43 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-11-23 01:59:42,017 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2021-11-23 01:59:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:42,018 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-11-23 01:59:42,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-11-23 01:59:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:59:42,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:42,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:42,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:42,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:42,234 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2021-11-23 01:59:42,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:42,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483892953] [2021-11-23 01:59:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:42,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:42,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:42,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:42,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 01:59:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:42,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 01:59:42,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:42,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:42,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:42,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483892953] [2021-11-23 01:59:42,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483892953] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:42,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:42,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 01:59:42,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357431444] [2021-11-23 01:59:42,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:42,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 01:59:42,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 01:59:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 01:59:42,842 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:43,031 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-11-23 01:59:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:59:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-23 01:59:43,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:43,034 INFO L225 Difference]: With dead ends: 80 [2021-11-23 01:59:43,034 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 01:59:43,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 01:59:43,035 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:43,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 162 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:59:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 01:59:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2021-11-23 01:59:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 63 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-11-23 01:59:43,045 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2021-11-23 01:59:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:43,046 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-11-23 01:59:43,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-11-23 01:59:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:59:43,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:43,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:43,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:43,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:43,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2021-11-23 01:59:43,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:43,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338167594] [2021-11-23 01:59:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:43,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:43,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:43,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:43,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 01:59:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:43,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:59:43,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:43,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:43,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:43,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338167594] [2021-11-23 01:59:43,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338167594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:43,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:43,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 01:59:43,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42737921] [2021-11-23 01:59:43,438 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 01:59:43,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 01:59:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:59:43,440 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:43,521 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2021-11-23 01:59:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:59:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-23 01:59:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:43,523 INFO L225 Difference]: With dead ends: 84 [2021-11-23 01:59:43,523 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 01:59:43,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 01:59:43,525 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:43,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 218 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:59:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 01:59:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 69. [2021-11-23 01:59:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 65 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2021-11-23 01:59:43,534 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 12 [2021-11-23 01:59:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:43,534 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2021-11-23 01:59:43,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2021-11-23 01:59:43,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 01:59:43,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:43,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:43,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:43,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:43,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2021-11-23 01:59:43,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:43,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653312392] [2021-11-23 01:59:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:43,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:43,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:43,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:43,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 01:59:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:43,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 01:59:43,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:43,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:44,070 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653312392] [2021-11-23 01:59:44,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653312392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:44,071 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:44,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-23 01:59:44,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777915066] [2021-11-23 01:59:44,071 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:44,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 01:59:44,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 01:59:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:59:44,073 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:44,195 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-11-23 01:59:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:59:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-23 01:59:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:44,199 INFO L225 Difference]: With dead ends: 79 [2021-11-23 01:59:44,199 INFO L226 Difference]: Without dead ends: 79 [2021-11-23 01:59:44,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:59:44,200 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 93 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:44,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 168 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-23 01:59:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-23 01:59:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 54 states have (on average 1.5185185185185186) internal successors, (82), 64 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2021-11-23 01:59:44,211 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 13 [2021-11-23 01:59:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:44,211 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2021-11-23 01:59:44,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2021-11-23 01:59:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:59:44,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:44,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:44,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:44,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:44,429 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:44,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2021-11-23 01:59:44,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:44,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984343568] [2021-11-23 01:59:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:44,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:44,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:44,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:44,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 01:59:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:44,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:59:44,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:44,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 01:59:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:44,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:44,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984343568] [2021-11-23 01:59:44,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984343568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:44,621 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:44,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 01:59:44,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099439567] [2021-11-23 01:59:44,622 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:44,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:59:44,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:59:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:44,623 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:44,735 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-11-23 01:59:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:59:44,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-23 01:59:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:44,737 INFO L225 Difference]: With dead ends: 79 [2021-11-23 01:59:44,737 INFO L226 Difference]: Without dead ends: 79 [2021-11-23 01:59:44,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:44,738 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:44,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-23 01:59:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-23 01:59:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 54 states have (on average 1.5) internal successors, (81), 64 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-11-23 01:59:44,745 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 14 [2021-11-23 01:59:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:44,746 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-11-23 01:59:44,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2021-11-23 01:59:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:59:44,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:44,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:44,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:44,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2021-11-23 01:59:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:44,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597041491] [2021-11-23 01:59:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:44,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:44,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:44,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 01:59:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:45,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 01:59:45,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:47,230 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 01:59:47,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 01:59:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:47,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:57,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:57,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597041491] [2021-11-23 01:59:57,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597041491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:57,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:57,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-23 01:59:57,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203837013] [2021-11-23 01:59:57,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:57,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 01:59:57,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 01:59:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=100, Unknown=4, NotChecked=0, Total=132 [2021-11-23 01:59:57,682 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:57,857 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2021-11-23 01:59:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 01:59:57,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-23 01:59:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:57,858 INFO L225 Difference]: With dead ends: 71 [2021-11-23 01:59:57,859 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 01:59:57,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=36, Invalid=116, Unknown=4, NotChecked=0, Total=156 [2021-11-23 01:59:57,859 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 94 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:57,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 200 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2021-11-23 01:59:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 01:59:57,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2021-11-23 01:59:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 63 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-11-23 01:59:57,866 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 14 [2021-11-23 01:59:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:57,866 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-11-23 01:59:57,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-11-23 01:59:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:59:57,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:57,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:57,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:58,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:58,074 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571318, now seen corresponding path program 1 times [2021-11-23 01:59:58,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:58,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397320851] [2021-11-23 01:59:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:58,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:58,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:58,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:58,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 01:59:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:58,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 01:59:58,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:58,250 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 01:59:58,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 01:59:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:58,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:58,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:58,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397320851] [2021-11-23 01:59:58,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397320851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:58,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:58,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-23 01:59:58,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748483318] [2021-11-23 01:59:58,575 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:58,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 01:59:58,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 01:59:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 01:59:58,576 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:58,787 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-11-23 01:59:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 01:59:58,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-23 01:59:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:58,788 INFO L225 Difference]: With dead ends: 70 [2021-11-23 01:59:58,788 INFO L226 Difference]: Without dead ends: 70 [2021-11-23 01:59:58,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-23 01:59:58,789 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:58,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 106 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-11-23 01:59:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-23 01:59:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-11-23 01:59:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 62 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2021-11-23 01:59:58,794 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 14 [2021-11-23 01:59:58,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:58,794 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2021-11-23 01:59:58,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 01:59:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2021-11-23 01:59:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:59:58,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:58,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:58,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:58,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:58,996 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2021-11-23 01:59:58,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:58,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229263011] [2021-11-23 01:59:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:58,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:58,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:58,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:59,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 01:59:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:59,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 01:59:59,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:59,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:59,167 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:59,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229263011] [2021-11-23 01:59:59,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229263011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:59,168 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:59,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 01:59:59,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609859815] [2021-11-23 01:59:59,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:59,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:59:59,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:59:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:59:59,169 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:59,274 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2021-11-23 01:59:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 01:59:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-23 01:59:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:59,276 INFO L225 Difference]: With dead ends: 73 [2021-11-23 01:59:59,276 INFO L226 Difference]: Without dead ends: 68 [2021-11-23 01:59:59,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:59:59,277 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:59,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 124 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-23 01:59:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-11-23 01:59:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.411764705882353) internal successors, (72), 59 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 01:59:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-11-23 01:59:59,280 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 14 [2021-11-23 01:59:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:59,280 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-11-23 01:59:59,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-11-23 01:59:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:59:59,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:59,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:59,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:59,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:59,482 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1973834710, now seen corresponding path program 1 times [2021-11-23 01:59:59,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 01:59:59,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272047486] [2021-11-23 01:59:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:59,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 01:59:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 01:59:59,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 01:59:59,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 01:59:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:59,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 01:59:59,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:59,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:59:59,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 01:59:59,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272047486] [2021-11-23 01:59:59,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272047486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:59,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:59,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 01:59:59,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111477713] [2021-11-23 01:59:59,739 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:59,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:59:59,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 01:59:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:59:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:59,741 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:59,774 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-11-23 01:59:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:59:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-23 01:59:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:59,776 INFO L225 Difference]: With dead ends: 43 [2021-11-23 01:59:59,776 INFO L226 Difference]: Without dead ends: 39 [2021-11-23 01:59:59,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:59:59,777 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:59,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:59:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-23 01:59:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-23 01:59:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 36 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-23 01:59:59,780 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 14 [2021-11-23 01:59:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:59,780 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-23 01:59:59,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 01:59:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-23 01:59:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 01:59:59,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:59,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:59,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 01:59:59,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 01:59:59,999 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 01:59:59,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2021-11-23 02:00:00,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:00,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073018750] [2021-11-23 02:00:00,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:00,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:00,001 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:00,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:00:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:00,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:00:00,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:00,217 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:00:00,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-23 02:00:00,475 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-23 02:00:00,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2021-11-23 02:00:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:00,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:00,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073018750] [2021-11-23 02:00:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073018750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:00,933 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:00,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-23 02:00:00,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792904919] [2021-11-23 02:00:00,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:00,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:00:00,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:00:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:00:00,935 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:03,061 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-23 02:00:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:00:03,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-23 02:00:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:03,062 INFO L225 Difference]: With dead ends: 40 [2021-11-23 02:00:03,062 INFO L226 Difference]: Without dead ends: 40 [2021-11-23 02:00:03,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2021-11-23 02:00:03,063 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:03,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2021-11-23 02:00:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-23 02:00:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-11-23 02:00:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 36 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:03,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-23 02:00:03,067 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 17 [2021-11-23 02:00:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:03,067 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-23 02:00:03,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-23 02:00:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:00:03,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:03,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:03,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-23 02:00:03,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:03,280 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:03,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 406071094, now seen corresponding path program 1 times [2021-11-23 02:00:03,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:03,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913905937] [2021-11-23 02:00:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:03,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:03,282 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:03,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:00:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:03,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:00:03,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:05,560 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:00:05,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 02:00:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:05,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:17,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:17,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913905937] [2021-11-23 02:00:17,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913905937] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:17,913 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:17,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-23 02:00:17,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824419879] [2021-11-23 02:00:17,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:17,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:00:17,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:00:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=58, Unknown=4, NotChecked=0, Total=90 [2021-11-23 02:00:17,915 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:18,034 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-11-23 02:00:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:00:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-23 02:00:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:18,035 INFO L225 Difference]: With dead ends: 38 [2021-11-23 02:00:18,035 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 02:00:18,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=46, Invalid=82, Unknown=4, NotChecked=0, Total=132 [2021-11-23 02:00:18,036 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:18,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 63 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2021-11-23 02:00:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 02:00:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-23 02:00:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-11-23 02:00:18,039 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2021-11-23 02:00:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:18,039 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-11-23 02:00:18,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:18,039 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-11-23 02:00:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:00:18,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:18,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:18,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:18,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:18,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash 861631573, now seen corresponding path program 1 times [2021-11-23 02:00:18,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:18,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419971111] [2021-11-23 02:00:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:18,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:18,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:18,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:18,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:00:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:18,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:00:18,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:18,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:18,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:00:18,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2021-11-23 02:00:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:18,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:18,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419971111] [2021-11-23 02:00:18,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419971111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:18,990 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:18,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 9 [2021-11-23 02:00:18,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510398252] [2021-11-23 02:00:18,991 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:18,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:00:18,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:00:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:00:18,992 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:19,196 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-11-23 02:00:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:00:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-23 02:00:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:19,198 INFO L225 Difference]: With dead ends: 41 [2021-11-23 02:00:19,198 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 02:00:19,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:00:19,199 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:19,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 101 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:00:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 02:00:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-11-23 02:00:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-23 02:00:19,202 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 18 [2021-11-23 02:00:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:19,202 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-23 02:00:19,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-23 02:00:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:00:19,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:19,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:19,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:19,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:19,404 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash 861631572, now seen corresponding path program 1 times [2021-11-23 02:00:19,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:19,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075464285] [2021-11-23 02:00:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:19,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:19,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:19,406 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:19,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:00:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:19,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:00:19,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:19,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:19,601 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 02:00:19,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2021-11-23 02:00:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:19,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:19,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075464285] [2021-11-23 02:00:19,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075464285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:19,643 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:19,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:00:19,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219156836] [2021-11-23 02:00:19,643 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:19,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:00:19,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:00:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:00:19,644 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:19,747 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-11-23 02:00:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:00:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-23 02:00:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:19,748 INFO L225 Difference]: With dead ends: 37 [2021-11-23 02:00:19,748 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 02:00:19,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:00:19,749 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:19,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 49 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:00:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 02:00:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-23 02:00:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 33 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-11-23 02:00:19,752 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2021-11-23 02:00:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:19,752 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-11-23 02:00:19,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-11-23 02:00:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:00:19,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:19,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:19,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:19,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:19,954 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash -607702474, now seen corresponding path program 1 times [2021-11-23 02:00:19,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:19,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009896297] [2021-11-23 02:00:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:19,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:19,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:19,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:19,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 02:00:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:20,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:00:20,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:20,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:26,700 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ldv_malloc_#res.base_63| (_ BitVec 32))) (or (exists ((|v_ULTIMATE.start_probe1_6_#t~ret40#1.base_69| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_probe1_6_#t~ret40#1.base_69|))))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4| (store |c_old(#valid)| |v_ULTIMATE.start_probe1_6_#t~ret40#1.base_69| (_ bv0 1)))))) (= (store |c_#valid| |v_ldv_malloc_#res.base_63| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_4|) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_63|))))))) is different from false [2021-11-23 02:00:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:26,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:26,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009896297] [2021-11-23 02:00:26,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009896297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:26,773 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:26,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 02:00:26,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881169711] [2021-11-23 02:00:26,774 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:26,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:00:26,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:00:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=101, Unknown=6, NotChecked=20, Total=156 [2021-11-23 02:00:26,775 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:26,939 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-11-23 02:00:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:00:26,940 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-11-23 02:00:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:26,940 INFO L225 Difference]: With dead ends: 42 [2021-11-23 02:00:26,940 INFO L226 Difference]: Without dead ends: 34 [2021-11-23 02:00:26,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=35, Invalid=119, Unknown=6, NotChecked=22, Total=182 [2021-11-23 02:00:26,942 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:26,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 142 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2021-11-23 02:00:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-23 02:00:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-23 02:00:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 28 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-11-23 02:00:26,944 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2021-11-23 02:00:26,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:26,945 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-11-23 02:00:26,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:00:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-11-23 02:00:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:00:26,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:26,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:26,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:27,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:27,155 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 940774974, now seen corresponding path program 1 times [2021-11-23 02:00:27,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:27,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038656302] [2021-11-23 02:00:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:27,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:27,157 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:27,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:00:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:27,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 02:00:27,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:27,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:00:27,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:00:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:27,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:27,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-23 02:00:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:27,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038656302] [2021-11-23 02:00:27,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038656302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:27,606 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:27,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-23 02:00:27,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785677739] [2021-11-23 02:00:27,606 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:27,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:00:27,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:00:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:00:27,607 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:27,858 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-11-23 02:00:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:00:27,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-23 02:00:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:27,860 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:00:27,860 INFO L226 Difference]: Without dead ends: 33 [2021-11-23 02:00:27,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:00:27,861 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 68 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:27,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 91 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:00:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-23 02:00:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-11-23 02:00:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-11-23 02:00:27,863 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 19 [2021-11-23 02:00:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:27,864 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-11-23 02:00:27,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-11-23 02:00:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:00:27,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:27,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:27,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:28,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:28,076 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:28,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash -900345610, now seen corresponding path program 1 times [2021-11-23 02:00:28,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:28,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135640642] [2021-11-23 02:00:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:28,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:28,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:28,078 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:28,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 02:00:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:28,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:00:28,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:28,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:28,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:00:28,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135640642] [2021-11-23 02:00:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135640642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:28,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:00:28,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:00:28,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517925801] [2021-11-23 02:00:28,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:28,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:00:28,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:00:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:00:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:00:28,213 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:00:28,231 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-11-23 02:00:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:00:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-23 02:00:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:00:28,232 INFO L225 Difference]: With dead ends: 29 [2021-11-23 02:00:28,232 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 02:00:28,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:00:28,233 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:00:28,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:00:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 02:00:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 02:00:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-11-23 02:00:28,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 20 [2021-11-23 02:00:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:00:28,235 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-11-23 02:00:28,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:00:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-11-23 02:00:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:00:28,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:00:28,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:00:28,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 02:00:28,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:00:28,437 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2021-11-23 02:00:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:00:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash -900746796, now seen corresponding path program 1 times [2021-11-23 02:00:28,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:00:28,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85367751] [2021-11-23 02:00:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:00:28,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:00:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:00:28,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:00:28,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de001b-a608-4bfb-94e9-4fa06ab2b0e9/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 02:00:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:00:28,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 02:00:28,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:00:28,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 02:00:28,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:00:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:00:28,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:00:29,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24